:root {
  --petrol: #082f2c;
  --petrol-deep: #031f21;
  --petrol-soft: #17433e;
  --cream: #f5ecda;
  --cream-bright: #fff8ea;
  --ink: #102d2c;
  --coral: #f06452;
  --coral-dark: #ca493b;
  --mint: #a8cbb8;
  --yellow: #f6c65b;
  --lilac: #a999d4;
  --line: rgba(245, 236, 218, .28);
  --pad: clamp(1.15rem, 4vw, 4.5rem);
  --header-h: 6rem;
  --footer-h: 4.7rem;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { height: 100%; background: var(--petrol-deep); }
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--petrol-deep);
  color: var(--cream);
  font-family: "DM Sans", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body[data-language="zh"] { font-family: "Noto Sans SC", "DM Sans", sans-serif; }
body[data-language="hi"] { font-family: "Noto Sans Devanagari", "DM Sans", sans-serif; }
body[data-language="zh"] .chapter h1,
body[data-language="zh"] .chapter h2,
body[data-language="hi"] .chapter h1,
body[data-language="hi"] .chapter h2 { font-family: inherit; font-weight: 600; letter-spacing: -.02em; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: fixed;
  z-index: 30;
  left: 1rem;
  top: -5rem;
  padding: .75rem 1rem;
  border-radius: 2rem;
  background: var(--cream);
  color: var(--petrol);
  transition: top .2s ease;
}
.skip:focus { top: 1rem; }

.mint-header {
  position: fixed;
  z-index: 20;
  inset: 0 0 auto 0;
  height: var(--header-h);
  display: grid;
  grid-template-columns: minmax(11rem, 1fr) auto minmax(5rem, 1fr);
  align-items: center;
  gap: 2rem;
  padding: 0 2rem;
  pointer-events: none;
}
.mint-header::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(3, 31, 33, .76), transparent);
}
.mint-brand {
  width: max-content;
  display: flex;
  align-items: center;
  gap: .8rem;
  color: var(--cream-bright);
  text-decoration: none;
  pointer-events: auto;
}
.mint-brand::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 0;
  width: 14rem;
  height: auto;
  border-radius: 0 1.3rem 1.3rem 0;
  background: linear-gradient(90deg, rgba(3,31,33,.98) 0 76%, rgba(3,31,33,0));
}
.mint-brand img { width: 2.9rem; height: 2.9rem; filter: drop-shadow(0 .45rem 1.2rem rgba(0,0,0,.22)); }
.mint-brand > span { font-family: "Fraunces", Georgia, serif; font-size: 1.35rem; line-height: 1; }
.mint-brand small {
  display: block;
  margin-top: .32rem;
  font: 500 .57rem/1 "DM Sans", sans-serif;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--mint);
}

.chapter-dashes {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  padding: .5rem .9rem;
  border: 1px solid rgba(245,236,218,.09);
  border-radius: 999px;
  background: rgba(3,31,33,.94);
  box-shadow: 0 .7rem 2rem rgba(0,0,0,.12);
  pointer-events: auto;
}
.chapter-dashes a {
  position: relative;
  width: 2.9rem;
  height: 1.4rem;
  display: grid;
  place-items: center;
  text-decoration: none;
}
.chapter-dashes a::after {
  content: "";
  width: 100%;
  height: .28rem;
  border-radius: 2rem;
  background: rgba(245, 236, 218, .68);
  transition: background .25s ease, transform .25s ease;
}
.chapter-dashes a:hover::after, .chapter-dashes a:focus-visible::after { transform: scaleX(1.15); }
.chapter-dashes a.is-active::after { background: var(--coral); }
.chapter-dashes span {
  position: absolute;
  top: 1.8rem;
  left: 50%;
  padding: .35rem .5rem;
  border-radius: .4rem;
  opacity: 0;
  transform: translate(-50%, -.2rem);
  color: var(--cream);
  background: var(--petrol-deep);
  font-size: .68rem;
  white-space: nowrap;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.chapter-dashes a:hover span, .chapter-dashes a:focus-visible span { opacity: 1; transform: translate(-50%, 0); }

.header-tools {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: .55rem;
  pointer-events: auto;
}
.language-select { position: relative; }
.language-select select {
  min-width: 4rem;
  height: 2.55rem;
  padding: 0 1.65rem 0 .75rem;
  border: 1px solid rgba(245,236,218,.18);
  border-radius: 999px;
  appearance: none;
  background: rgba(3,31,33,.92) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='m1 1 4 4 4-4' fill='none' stroke='%23f5ecda'/%3E%3C/svg%3E") calc(100% - .65rem) center/10px 6px no-repeat;
  color: var(--cream);
  font: 700 .68rem/1 "DM Sans", sans-serif;
  cursor: pointer;
}
.language-select select:focus-visible { outline: 2px solid var(--coral); outline-offset: 2px; }
.chapter-count {
  display: flex;
  align-items: baseline;
  gap: .4rem;
  font-variant-numeric: tabular-nums;
  color: rgba(245, 236, 218, .55);
  min-width: 8.2rem;
  justify-content: center;
  padding: .5rem .7rem;
  border: 1px solid rgba(245,236,218,.18);
  border-radius: 999px;
  background: rgba(3,31,33,.92);
}
.chapter-count b { color: var(--cream); font-size: 1.1rem; }
.chapter-count em { font-style: normal; font-size: .75rem; }

.mint-world {
  height: 100svh;
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  cursor: grab;
}
.mint-world::-webkit-scrollbar { display: none; }
.mint-world:active { cursor: grabbing; }
.mint-world:focus { outline: none; }

.chapter {
  position: relative;
  flex: 0 0 100vw;
  width: 100vw;
  height: 100svh;
  min-width: 0;
  overflow: hidden;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  isolation: isolate;
}
.chapter h1, .chapter h2 {
  margin: 0;
  max-width: 12ch;
  color: var(--cream-bright);
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: clamp(2.65rem, 5vw, 6rem);
  line-height: .96;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.chapter p { line-height: 1.65; }
.eyebrow {
  margin: 0 0 1.35rem;
  color: var(--coral);
  font-weight: 700;
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.big-copy { max-width: 31rem; margin: 1.5rem 0 1rem; font-size: clamp(1.12rem, 1.6vw, 1.5rem); line-height: 1.5 !important; }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  min-height: 3.3rem;
  align-items: center;
  justify-content: center;
  padding: .75rem 1.25rem;
  border: 1px solid rgba(245, 236, 218, .34);
  border-radius: 999px;
  color: var(--cream-bright);
  text-decoration: none;
  font-weight: 700;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-coral { border-color: var(--coral); background: var(--coral); color: #fff; box-shadow: 0 .8rem 2.2rem rgba(240, 100, 82, .24); }
.button-coral:hover { background: #ff7462; }
.button-glass { background: rgba(8, 47, 44, .35); backdrop-filter: blur(10px); }

.chapter-home {
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 1rem) var(--pad) calc(var(--footer-h) + 1rem);
  background: var(--petrol) url("images/toy-mint-canon.png") center/cover no-repeat;
}
.chapter-home::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(3, 31, 33, .2) 0 34%, transparent 52%), linear-gradient(0deg, rgba(3,31,33,.48), transparent 28%);
}
.home-copy { width: min(34rem, 38vw); margin-top: 1rem; }
.home-copy { position: relative; z-index: 1; }
.home-copy::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -2.4rem;
  right: -3.5rem;
  bottom: -2.4rem;
  left: calc(var(--pad) * -1);
  background: linear-gradient(90deg, rgba(3,31,33,.96) 0 72%, rgba(3,31,33,.73) 87%, transparent);
}
.home-copy h1 { max-width: 10.5ch; font-size: clamp(2.25rem, 4.25vw, 5rem); }
.lede { max-width: 32rem; margin: 1.5rem 0 0; color: rgba(245,236,218,.84); font-size: clamp(1rem, 1.2vw, 1.25rem); }
.score-ribbon {
  position: absolute;
  left: var(--pad);
  bottom: calc(var(--footer-h) + 1.3rem);
  display: flex;
  gap: clamp(1.1rem, 3vw, 3.6rem);
}
.score-ribbon span { display: grid; gap: .2rem; }
.score-ribbon small { color: var(--mint); font-size: .57rem; letter-spacing: .15em; text-transform: uppercase; }
.score-ribbon strong { color: var(--cream); font-size: .8rem; font-weight: 600; }
.direction-cue {
  position: absolute;
  right: var(--pad);
  bottom: calc(var(--footer-h) + 1rem);
  display: flex;
  align-items: center;
  gap: .8rem;
  margin: 0;
  color: var(--cream);
  font-size: .67rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.direction-cue i, .return-home i { width: 4rem; height: 1px; background: var(--cream); position: relative; }
.direction-cue i::after { content: ""; position: absolute; right: 0; top: -.25rem; width: .5rem; height: .5rem; border-top: 1px solid; border-right: 1px solid; transform: rotate(45deg); }

.split { display: grid; grid-template-columns: 56% 44%; background: var(--cream); color: var(--ink); }
.split.reverse { grid-template-columns: 44% 56%; }
.split.reverse .chapter-image { order: 2; }
.chapter-image { height: 100%; margin: 0; overflow: hidden; background: var(--petrol); }
.chapter-image img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.chapter-copy {
  align-self: center;
  max-height: calc(100svh - var(--header-h) - var(--footer-h) - 2rem);
  overflow-y: auto;
  padding: calc(var(--header-h) + 1.5rem) clamp(2rem, 5vw, 6rem) calc(var(--footer-h) + 1.5rem);
  scrollbar-width: thin;
}
.chapter-copy h2 { max-width: 10ch; color: var(--ink); }
.chapter-copy > p:not(.eyebrow) { max-width: 34rem; color: rgba(16,45,44,.75); }
.pieces { display: flex; gap: .8rem; margin-top: 2.2rem; }
.pieces i {
  width: 2.7rem;
  height: 2.7rem;
  display: grid;
  place-items: center;
  border-radius: .6rem;
  background: #e7dcc8;
  color: var(--petrol);
  font-style: normal;
  font-weight: 700;
}
.pieces i:nth-child(1) { color: var(--coral); }
.pieces i:nth-child(2) { color: #75aa98; }
.pieces i:nth-child(3) { color: #d99f25; }
.pieces i:nth-child(4) { color: var(--lilac); }

.machine-steps { display: grid; gap: .65rem; padding: 0; margin: 2rem 0 0; list-style: none; }
.machine-steps li { display: flex; align-items: center; gap: .85rem; font-weight: 700; }
.machine-steps b { width: 2.3rem; height: 2.3rem; display: grid; place-items: center; border: 2px solid var(--coral); border-radius: 50%; color: var(--coral); }

.chapter-rule { background: var(--petrol-deep); color: var(--cream); }
.chapter-rule .chapter-copy { background: var(--petrol); }
.chapter-rule .chapter-copy h2 { color: var(--cream-bright); }
.chapter-rule .chapter-copy > p:not(.eyebrow) { color: rgba(245,236,218,.72); }
.rule-cycle { display: flex; align-items: center; gap: .7rem; margin-top: 2rem; color: var(--cream); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.rule-cycle i { width: 1.5rem; height: 1px; background: var(--coral); }

.chapter-agents { display: grid; grid-template-columns: 58% 42%; align-items: center; padding: var(--header-h) var(--pad) var(--footer-h); background: var(--petrol-deep); }
.agents-stage { max-width: 50rem; }
.agents-stage h2 { max-width: 11ch; }
.agents-stage .big-copy { color: rgba(245,236,218,.7); }
.machine-doors { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin-top: 2rem; }
.machine-doors a {
  min-height: 9rem;
  display: grid;
  align-content: end;
  gap: .3rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: .8rem;
  background: rgba(245,236,218,.04);
  text-decoration: none;
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
}
.machine-doors a:hover { border-color: var(--coral); background: rgba(240,100,82,.08); transform: translateY(-3px); }
.machine-doors small { color: var(--coral); }
.machine-doors b { font-family: "Fraunces", serif; font-size: 1.25rem; }
.machine-doors span { color: rgba(245,236,218,.55); font-size: .72rem; line-height: 1.35; }
.agent-orbit { position: relative; width: min(32vw, 31rem); aspect-ratio: 1; justify-self: center; }
.agent-eye {
  position: absolute;
  inset: 22%;
  border: 1px solid rgba(245,236,218,.4);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--coral) 0 12%, var(--cream) 12.5% 18%, var(--petrol) 18.5% 42%, var(--mint) 42.5% 44%, transparent 44.5%);
  box-shadow: 0 0 5rem rgba(240,100,82,.16), inset 0 0 3rem rgba(0,0,0,.3);
}
.agent-orbit > i { position: absolute; inset: 8%; border: 1px solid rgba(245,236,218,.18); border-radius: 50%; }
.agent-orbit > i.orbit-two { inset: 0 18%; transform: rotate(64deg); }
.agent-orbit > b { position: absolute; font-size: 2.2rem; color: var(--coral); }
.agent-orbit > b:nth-of-type(1) { top: 5%; left: 44%; }
.agent-orbit > b:nth-of-type(2) { right: 4%; bottom: 26%; color: var(--mint); }
.agent-orbit > b:nth-of-type(3) { left: 8%; bottom: 15%; color: var(--yellow); }

.token-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; margin: 2rem 0; }
.token-facts div { padding: .9rem; border: 1px solid rgba(16,45,44,.2); border-radius: .55rem; }
.token-facts dt { color: rgba(16,45,44,.5); font-size: .58rem; letter-spacing: .12em; text-transform: uppercase; }
.token-facts dd { margin: .35rem 0 0; font-weight: 700; }
.text-link { color: var(--coral-dark); font-weight: 700; text-underline-offset: .25rem; }

.chapter-join { display: grid; place-items: center; padding: var(--header-h) var(--pad) var(--footer-h); background: var(--petrol); text-align: center; }
.chapter-join::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 10% 20%;
  border: 1px solid rgba(245,236,218,.12);
  border-radius: 50%;
  box-shadow: 0 0 0 4rem rgba(245,236,218,.018), 0 0 0 8rem rgba(245,236,218,.012);
}
.join-copy { max-width: 48rem; }
.join-copy > img { margin-bottom: 1.4rem; }
.join-copy h2 { max-width: none; font-size: clamp(4rem, 10vw, 10rem); }
.join-copy > p:not(.eyebrow) { max-width: 38rem; margin: 1.3rem auto; color: rgba(245,236,218,.7); font-size: 1.1rem; }
.join-copy .actions { justify-content: center; }
.end-links { display: flex; justify-content: center; gap: 1.4rem; margin-top: 2rem; font-size: .78rem; }
.end-links a { color: var(--mint); text-underline-offset: .2rem; }
.return-home { position: absolute; right: var(--pad); bottom: calc(var(--footer-h) + 1rem); display: flex; align-items: center; gap: .8rem; text-decoration: none; font-size: .67rem; letter-spacing: .15em; text-transform: uppercase; }
.return-home i::after { content: ""; position: absolute; left: 0; top: -.25rem; width: .5rem; height: .5rem; border-bottom: 1px solid; border-left: 1px solid; transform: rotate(45deg); }

.mint-controls {
  position: fixed;
  z-index: 20;
  left: var(--pad);
  right: var(--pad);
  bottom: 0;
  height: var(--footer-h);
  display: grid;
  grid-template-columns: 2.9rem minmax(7rem, 16rem) 2.9rem 1fr;
  align-items: center;
  gap: .7rem;
  pointer-events: none;
}
.mint-controls::before { content: ""; position: absolute; inset: -2rem calc(var(--pad) * -1) 0; z-index: -1; background: linear-gradient(0deg, rgba(3,31,33,.8), transparent); }
.mint-controls button {
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(245,236,218,.35);
  border-radius: 50%;
  background: rgba(8,47,44,.65);
  color: var(--cream);
  cursor: pointer;
  pointer-events: auto;
  backdrop-filter: blur(8px);
}
.mint-controls button:hover { border-color: var(--coral); background: var(--coral); }
.mint-controls button:disabled { opacity: .25; cursor: default; }
.progress-track { height: .24rem; overflow: hidden; border-radius: 1rem; background: rgba(245,236,218,.25); }
.progress-track i { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--coral); }
.mint-controls p { justify-self: end; margin: 0; color: rgba(245,236,218,.47); font-size: .63rem; letter-spacing: .1em; text-transform: uppercase; }

@media (max-width: 920px) {
  :root { --header-h: 5rem; --footer-h: 4.5rem; }
  .mint-header { grid-template-columns: 1fr auto; }
  .chapter-dashes { display: none; }
  .mint-brand small { display: none; }
  .chapter-count { min-width: 4.8rem; }
  .split, .split.reverse { grid-template-columns: 1fr; grid-template-rows: 43% 57%; }
  .split.reverse .chapter-image { order: 0; }
  .chapter-copy { align-self: stretch; max-height: none; padding: 1.4rem var(--pad) calc(var(--footer-h) + 1rem); }
  .chapter-copy h2 { font-size: clamp(2.2rem, 9vw, 4.2rem); }
  .chapter-home { background-position: 62% center; align-items: flex-start; padding-top: calc(var(--header-h) + 4rem); }
  .chapter-home::after { background: linear-gradient(90deg, rgba(3,31,33,.92), rgba(3,31,33,.32) 72%, transparent), linear-gradient(0deg, rgba(3,31,33,.72), transparent 50%); }
  .home-copy { width: min(31rem, 88vw); }
  .score-ribbon span:nth-child(2) { display: none; }
  .direction-cue { display: none; }
  .chapter-agents { grid-template-columns: 1fr; align-content: center; }
  .agent-orbit { display: none; }
  .machine-doors { grid-template-columns: 1fr 1fr 1fr; }
  .mint-controls { grid-template-columns: 2.8rem 1fr 2.8rem; }
  .mint-controls p { display: none; }
}

@media (max-width: 620px) {
  .mint-brand > span { font-size: 1.15rem; }
  .mint-brand img { width: 2.5rem; height: 2.5rem; }
  .chapter-count { min-width: 4.5rem; padding-inline: .5rem; font-size: .8rem; }
  .language-select select { min-width: 3.6rem; padding-left: .6rem; }
  .chapter-home { padding-top: calc(var(--header-h) + 2.5rem); background-position: 69% center; }
  .home-copy h1 { font-size: clamp(2.1rem, 10.8vw, 3.35rem); }
  .home-copy .lede { max-width: 20rem; font-size: .94rem; }
  .home-copy .actions { max-width: 17rem; }
  .button { width: 100%; min-height: 3rem; }
  .score-ribbon { gap: 1.2rem; }
  .score-ribbon span:nth-child(3) { display: none; }
  .split, .split.reverse { grid-template-rows: 38% 62%; }
  .chapter-copy { padding-top: 1.15rem; }
  .chapter-copy .eyebrow { margin-bottom: .7rem; }
  .chapter-copy .big-copy { margin: .8rem 0 .5rem; font-size: 1rem; }
  .chapter-copy > p:not(.eyebrow) { font-size: .86rem; line-height: 1.45; }
  .pieces { margin-top: 1rem; gap: .4rem; }
  .pieces i { width: 2rem; height: 2rem; }
  .machine-steps { grid-template-columns: repeat(3, 1fr); gap: .35rem; margin-top: .8rem; }
  .machine-steps li { flex-direction: column; gap: .25rem; align-items: flex-start; font-size: .68rem; }
  .machine-steps b { width: 1.8rem; height: 1.8rem; }
  .rule-cycle { flex-wrap: wrap; margin-top: 1rem; }
  .chapter-agents { padding-top: calc(var(--header-h) + 1.5rem); align-content: start; }
  .agents-stage h2 { font-size: clamp(2.45rem, 12vw, 3.8rem); }
  .agents-stage .big-copy { font-size: .95rem; }
  .machine-doors { grid-template-columns: 1fr; margin-top: 1rem; }
  .machine-doors a { min-height: 5rem; }
  .machine-doors a span { display: none; }
  .token-facts { margin: .8rem 0; }
  .token-facts div { padding: .55rem; }
  .token-facts dd { font-size: .78rem; }
  .join-copy > img { width: 4.2rem; height: 4.2rem; }
  .join-copy h2 { font-size: clamp(4rem, 22vw, 6rem); }
  .join-copy .actions { max-width: 17rem; margin-inline: auto; }
  .return-home { display: none; }
}

@media (max-height: 720px) and (min-width: 921px) {
  :root { --header-h: 4.8rem; --footer-h: 3.8rem; }
  .chapter h1, .chapter h2 { font-size: clamp(2.4rem, 4vw, 4.4rem); }
  .big-copy { font-size: 1rem; margin-block: 1rem .5rem; }
  .machine-doors { margin-top: 1rem; }
  .machine-doors a { min-height: 6.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}